Improvement in retort-stands



J. D. ODONNELL.

Retort Stand.

No; 44.447. Patented Sept, 27, 1864.

mix 58 5 UNITED STATES PATENT OFFICE.

IMPROVEMENT lN RETORT-STANDS.

. pt't'ificatiotl forming part of Letters Patent X0.

44,447, dated September '27, 1W4. antedated September 16, 1864.

To all whom it may concern lle it known that. I, J. 1). ODossrznn, of 'ashiugton, in the county of \Vashington and District of Columbia, have. invented new and uselul sliding clan-ipsand concentric rings combined together. so as to make a valuable improvement on retort stands; and I do hereby declare that the lollowing is a full, clear, and'exact description of the construction and operation of same, reference beint, had to the annexed drawings, making a part of this specification. of which- Figure 1 is a view of the whole machine, showing base A and upright rod 13 as used in the old style of retort-stands, with concentric rings lland clamps C of my iniprt-n'ed pattern in position on same; Fig. .5, the plan of the concentricringsz Fig.3, the elevationof same Fig. 4, plan of sliding clamps C Figs-3, the elevation of same.

The nature of my improvement consists in making the concentric rings 1) and slidingelanips (J separate, as shown inl igs. 3 and 5. instead ot being connected as in old st) lr. the slides 0 having two orifices, G and ll, as shown in Fig. 4, and two set screws-one, E, at hack of clamp, to secure the slide (1' to upright rod ll; the other, F, either at side or end ot'elamp, and securing concentric rings, which hook into orifice G, position of setscrews 1-) and 1- being shown in Fig. 5; the concentric rings 1) having the end of shank I turned down to form a hook,as shown in Fi 3, the hook fitting into orifice G, and being there secured by set-screw F, thus making slidesC support in a horizontal position rings 1), as shown in Fig.1, orifice ll permitting slide C to more up and down rod B, and be held in position at any poin t by set-screw E, as also shown in Fig. l.

The manner of the slide C- being fixed on rod B is only as in old-style stands, where ring and slide are connected in one.

The great advantage gained byharing rings 1) and slides 0 separate is that when desirable or necessary, as is often the case in chemical and pharmaceutical processes, the rings 1) may be chang d in position by merely loosing the set-screws 1, and lifting therings out of orifices G;is. for instance. if desirable to change the lowest ring to the top, it tnay be done without disturbing the intermediate ring, thus obviating entiivly the' necessary trouble ot" stiding otl' from upright rod, and repaeing in desired positions all the rings, as would be the case in the old style were such a change necessary.

'hat I claim as my invention, a secure by Letters Patent, is-

Making the rings and sliding clat'nps set arate, the rings ha ing ends of shanks bent to form hook, the slides C having the extra orifice G, which, with setscrew F, forms a clamp, combining thus with orifice H a slide of old style, as connected with ring of old stand, and a clamp, the first moving up and down the rod B, and securing by set-screw E the slides C at any point, the latter admitting the hook on end of shank I to ring D, and forming by means of set'screw F the ring and slide combined, gaining all the advantages before claimed, and operating as before described.

'itnesses; J. D. ODONFELL.

Ittcnn. 1-. BOISEAU, FRAKKUN S. Oman.

tid desire to 

